how long does it take to charge a car battery 15

There are several reasons your car battery could die; including going for long periods of time without starting your car, storing it in freezing outdoor temperatures, leaving headlights or interior lights on while the car is turned off, and more. In order to charge a dead car battery, a set of jumper cables and a functional car with a charged battery is required. You will then have the ability to connect the batteries to one another using the jumper cables, and recharge the dead battery by transferring energy from the functional battery. Continue reading this article to learn more about the steps you can take to safely and effectively charge a dead car battery using jumper cables.

How long does it take to charge a car battery? That depends on the size of the battery and the output of your charger. We'll explain some basic math in this video, that will help you better understand how long it might take for you to fully-recharge your car's battery. By the way, be sure to use a battery charger to charge your discharged car battery and not the car's alternator. Most alternators are designed to maintain batteries near a full state of charge, not recover deeply-discharged batteries.

Search Add New Question What if I connect it to the wrong terminals? wikiHow Contributor You could destroy the diodes in the alternator or blow the main fuse for the car. Depending on the model, the computers could be fried by a momentary reverse polarity jump. Thanks! Yes No Not Helpful 5 Helpful 7 Which car do I put the cables on first, dead battery or live battery? wikiHow Contributor Always place the cable on the charged battery first, then the dead battery. Refer to the article above to get the correct order of the cable connections. Thanks! Yes No Not Helpful 45 Helpful 12 Can I connect the negative end to the negative terminal of the dead battery instead of grounding it at the car's frame? Logic Johnson Lafontaine Only as a last resort. It will work, but if your battery isn`t in great shape, you could damage it. Always try for the frame. Thanks! Yes No Not Helpful 0 Helpful 0

Try to start the engine of the car that contains the dead battery. If the jumper cables and the battery you are charging have enough power, the car engine should turn over easily and start. If the engine in the car with the dead battery fails to start, allow five more minutes to pass for the dead battery to charge.

The battery on my truck is almost dead. I want to give it a full charge. I have the charger set to 12 volts, 10 amps. It's been there for 3 hours and the "charge complete" light has not turned on. I have been reading and I keep seeing articles that say 30 minutes to 2 hours for a full charge. FWIW: 2003 Chevy 1500. battery is about 2 years old. #1 IHateMyJob2004, Dec 5, 2010

Which car do I put the cables on first, dead battery or live battery? wikiHow Contributor Always place the cable on the charged battery first, then the dead battery. Refer to the article above to get the correct order of the cable connections. Thanks! Yes No Not Helpful 45 Helpful 12

Divide the battery's capacity in amp-hours by the charging rate. A typical automotive battery will likely have between 45 and 80 amp-hours of total capacity. If it's completely discharged, that would mean between 4.5 and 8 hours for a 10 amp charger to bring it back. In reality if the battery is still starting the car or truck then you probably have at least 50% charge and likely more. Basically the answer is, unfortunately, "it depends". ZV #5 Zenmervolt, Dec 6, 2010

Divide the battery's capacity in amp-hours by the charging rate. A typical automotive battery will likely have between 45 and 80 amp-hours of total capacity. If it's completely discharged, that would mean between 4.5 and 8 hours for a 10 amp charger to bring it back. In reality if the battery is still starting the car or truck then you probably have at least 50% charge and likely more. Basically the answer is, unfortunately, "it depends". ZV

Divide the battery's capacity in amp-hours by the charging rate. A typical automotive battery will likely have between 45 and 80 amp-hours of total capacity. If it's completely discharged, that would mean between 4.5 and 8 hours for a 10 amp charger to bring it back. In reality if the battery is still starting the car or truck then you probably have at least 50% charge and likely more. Basically the answer is, unfortunately, "it depends". ZV

Few things are more frustrating than getting into your car only to find that the engine won’t start. Often, the problem is as simple as a dead battery. Although this is obviously inconvenient, you can always attempt to jump start the car in order to revive the dead battery. This is assuming you have jumper cables, another vehicle with a working engine and some basic knowledge of how battery recharges work.

Connect each end of the positive jumper cable to the positive terminals on each car battery. The positive jumper cable is usually red in color if it is not labeled otherwise. The order in which you attach the jumper cables does make a difference, so follow this pattern: First connect one end of the positive jumper cable to the dead battery, then connect the other positive end of the jumper cable to the charged battery.

But there is a wide range of chargers with different charge rates on the market - from 2 to 10 amps. The higher the charge output, the faster a flat battery is recharged. Fast charging, however, is undesirable as it can buckle the battery plates.

To start the process of re-charging the battery, you’ll first need to get the good car and the bad car as close together as possible. Then, you’ll attach the red/positive cable to the battery terminal in the good car and then to the dead one. You’ll also do the same with the black/negative cable.

To start the process of re-charging the battery, you’ll first need to get the good car and the bad car as close together as possible. Then, you’ll attach the red/positive cable to the battery terminal in the good car and then to the dead one. You’ll also do the same with the black/negative cable.

How long does it take to charge an electric car? Well, it varies by car and charging station. We’ve made a handy chart showing every make and model of electric car on the road today with charging times using a variety of charging stations in different power levels. If you’d like to know the math behind the chart, read on!

At 10 amp/hr it will take about overnight or more to fully charge depending on the amp capacity on the battery and how drained it is. I'd leave it for at least over night. Recharge tomorrow night again. Last time I recharged my battery I left it over the weekend. Remember to ventilate so you dong store #3 The Stigenator, Dec 6, 2010

Eventually, because more current is being drained from the battery than the alternator can put back, the battery will not have enough power left to turn the starter motor. A battery in that state of discharge is said to be flat.

A fast "just get the damn engine started" charge is achievable in as low as 30 minutes, if you've got a beefy enough charger. A slower proper charge is an overnight process. A desulfating recharge, where you hook up a desulfator and a charger in parallel to restore to partially-good condition an otherwise dead battery, can take whole days. #8 Fallingwater, Dec 6, 2010

A fast "just get the damn engine started" charge is achievable in as low as 30 minutes, if you've got a beefy enough charger. A slower proper charge is an overnight process. A desulfating recharge, where you hook up a desulfator and a charger in parallel to restore to partially-good condition an otherwise dead battery, can take whole days.

i always left it on lowest trickle if its off the car overnight and about 30 minutes before i install it back into the car i put it on "fast start" i think thats like 20-50AMPS. i have a 3 setting one. 2/10/ XX AMP. normally works for me. I guess 8 hours at 10AMP works. Anyone leave it at autozone or something i heard they charge battery overnight as well. #6 T2urtle, Dec 6, 2010

Obviously, there are times when a battery recharge is not only possible, but fairly straightforward. So long as you know what you are doing, it shouldn’t take but a few minutes to recharge the dead battery. But if you are still unsure about the process, you may want to request help as it can be dangerous.

Can I connect the negative end to the negative terminal of the dead battery instead of grounding it at the car's frame? Logic Johnson Lafontaine Only as a last resort. It will work, but if your battery isn`t in great shape, you could damage it. Always try for the frame. Thanks! Yes No Not Helpful 0 Helpful 0